Retirement in the U.S.: The Complete Guide

Updated October 8, 2026. Figures for 2026. Want the short version first? Read Retiring Soon? Social Security, Medicare and Taxes: The Basics.

This guide explains the U.S. retirement system from scratch, for anyone who has never dealt with it before: Social Security, Medicare, employer pensions, retirement accounts, and how the federal government taxes all of it. It is based on official IRS, Social Security Administration and Medicare sources. Amounts change every year, and state income taxes are not covered (Florida has none).

Contents

• 1. The U.S. retirement system in 5 minutes
• 2. Key terms
• 3. Age milestones: what happens when
• 4. Social Security
• 5. Medicare
• 6. Health coverage before 65
• 7. Employer pensions and FRS
• 8. Retirement accounts: 401(k), 403(b), 457(b), IRA, HSA
• 9. Preparing for retirement: what to do in advance
• 10. Taking money out: tax, 10% penalty, withholding, rollovers
• 11. RMDs — Required Minimum Distributions
• 12. How Social Security is taxed
• 13. A retiree's 2026 federal tax, all together
• 14. Tax strategies in retirement
• 15. Other common questions
• 16. Forms: SSA-1099, 1099-R and others
• 17. Checklists
• 18. Official Sources

1. The U.S. retirement system in 5 minutes

The U.S. has no single "state pension" that everyone receives at a certain age. Retirement income comes from several independent pieces. Each has its own rules, its own starting age and its own tax treatment:

2. Key terms

3. Age milestones: what happens when

SSA treats a person as reaching an age the day before their birthday. People born on January 1 use the prior year.

4. Social Security

4.1. What it is and where the money comes from

Social Security is not welfare and not a personal savings account. It is a federal insurance program: today's workers pay FICA tax, which funds today's retirees, and each worker earns the right to a lifetime benefit through their work record. Besides retirement benefits, Social Security pays disability benefits (SSDI) and benefits to spouses, widows/widowers and children.

• 6.2% of wages is withheld for Social Security — only on the first $184,500 of 2026 wages (the wage base). The employer pays another 6.2%.
• 1.45% for Medicare on all wages with no cap (+0.9% Additional Medicare Tax on wages above $200,000 / $250,000 for married couples).
• Self-employed people pay both halves through SE tax (Schedule SE). Important: under-reporting self-employment income also lowers the person's future Social Security.

4.2. Who qualifies: credits

• 1 credit = $1,890 of earnings in 2026. Maximum 4 credits per year (so $7,560 of earnings in a year earns all 4).
• Retirement benefits require 40 credits — usually 10 years of work, not necessarily consecutive. Credits never expire.
• Fewer than 40 credits — see 4.9.

4.3. How the amount is calculated

1. SSA takes the 35 highest-earning years on which FICA was paid (earlier years are indexed to wage growth).
2. With fewer than 35 years, the missing years count as zeros and pull the average down. Each extra year of work can replace a zero year and raise the benefit.
3. The average monthly earnings (AIME) go through a progressive formula to produce the PIA, the benefit at FRA. Lower earners get a larger share of their earnings replaced.

2026 benchmarks: average retired-worker benefit about $2,071/month; maximum at FRA $4,152/month; 2026 COLA 2.8%.

4.4. When to start — one of the biggest decisions

• The early-claiming reduction and the delayed retirement credits (+8% per year after FRA) are permanent.
• A person can change their mind only within 12 months of starting, by repaying everything received (Form SSA-521). After FRA, benefits can be suspended to earn delayed credits.
• The break-even age between claiming early and late is usually around 78–82.
• What to weigh: health and family longevity; whether there is other money to live on until 70; whether the person is still working (see 4.5); the spouse (the survivor keeps the larger of the two benefits, so delaying the higher earner's benefit protects whichever spouse lives longer); taxes (see section 14).
• Medicare at 65 does not depend on whether Social Security has started.

4.5. Working before full retirement age (earnings test)

If a person collects Social Security before FRA and keeps working:

• 2026: earnings up to $24,480 a year have no effect; above that, SSA withholds $1 for every $2.
• In the year the person reaches FRA: the limit is $65,160, $1 is withheld for every $3, and only earnings before the FRA month count.
• Withheld benefits are not lost: at FRA the benefit is recalculated upward.
• No limit after FRA. Only wages and self-employment income count as earnings — pensions, IRA withdrawals, interest and rent do not.

4.6. Spouses, widows, ex-spouses, children

• Spousal benefit: up to 50% of the working spouse's PIA if the person's own benefit is smaller. The working spouse must already be collecting. Claiming early reduces it (about 32.5% of the spouse's PIA at 62). Delaying past FRA does not increase the spousal benefit. This matters especially when one spouse has a short U.S. work record: they can be paid based on the other spouse's record.
• Survivor benefit: up to 100% of what the deceased spouse received (or was entitled to). Available from 60 (reduced), in full at FRA. Of the two benefits (own and survivor), the person keeps the larger one. Remarrying after 60 does not end eligibility.
• Divorced spouse: if the marriage lasted 10 years or more, the person is currently unmarried and is 62+, they can collect spousal or survivor benefits on the ex-spouse's record. The ex-spouse's new family loses nothing.
• Children under 18 (19 if still in high school) and disabled children of a retiree can receive benefits (within the family maximum). One-time death payment: $255.

4.7. WEP and GPO are repealed

In the past, a person who received a pension from work not covered by Social Security (some government jobs, the federal CSRS system, work in another country) had their own Social Security cut (WEP), and their spousal or survivor benefit reduced or eliminated (GPO). The Social Security Fairness Act (P.L. 118-273, signed January 5, 2025) repealed both for benefits payable for months after December 2023; SSA has recalculated benefits and paid the back amounts. Today, a pension from any other system does not reduce Social Security.

4.8. If the person worked in another country

• The U.S. has totalization agreements with about 30 countries. If a person has fewer than 40 U.S. credits but at least 6, work in a partner country can count toward eligibility (the benefit is prorated to the U.S. work). The list is at ssa.gov/international.
• A foreign pension received by a U.S. resident is generally subject to U.S. federal tax. The tax treaty with that country may change the rule — check it country by country. Foreign retirement accounts may also trigger FBAR (FinCEN 114) and Form 8938 reporting.

4.9. No credits or not enough credits

• A benefit on the spouse's record (spousal), see 4.6.
• Keep working until 40 credits are reached — possible after 62 too.
• SSI (Supplemental Security Income) is a different program: a needs-based payment for people 65+ and people with disabilities who have very low income and assets. In 2026 the federal rate is up to $994/month for an individual and $1,491 for a couple; the asset limit is $2,000 / $3,000. Eligibility rules are strict (including residency status requirements). SSI is not taxable and is not reported on Form 1040.
• Medicaid and Medicare cost-assistance programs (Medicare Savings Programs, Extra Help) for people with low income.
• Without 40 credits, Medicare Part A can be bought: in 2026, $565/month (fewer than 30 credits) or $311 (30–39 credits).

4.10. Other Social Security points

• SSDI (disability) automatically converts to a retirement benefit of the same amount at FRA.
• Railroad workers get Railroad Retirement (RRB) instead of Social Security — Forms RRB-1099 and RRB-1099-R.
• How to apply: up to 4 months before the month benefits should start — online at ssa.gov/apply, by phone at 1-800-772-1213, or at an SSA office. Payments arrive the following month (paid in arrears) on the 2nd, 3rd or 4th Wednesday depending on the birthday.
• The trust fund outlook: the 2026 Trustees Report projects that the combined Social Security trust funds will run out of reserves in 2034. After that, unless Congress acts, incoming taxes would cover about 83% of scheduled benefits (the retirement fund OASI alone: late 2032, about 78%). This is not a "zero" scenario — payroll taxes keep coming in.

Sources: SSA 2026 COLA Fact Sheet; SSA "How You Earn Credits", "When to Start Receiving Retirement Benefits"; ssa.gov/benefits/retirement; 2026 OASDI Trustees Report.

5. Medicare

5.1. The parts of Medicare

Two main paths: Original Medicare (A + B) + Part D + Medigap — or Medicare Advantage (Part C). Medicare does not cover long-term custodial care (an extended nursing-home stay), and Original Medicare generally does not cover dental, glasses or hearing aids.

5.2. When and how to enroll

• Initial Enrollment Period (IEP) — 7 months: 3 months before the 65th-birthday month, that month, and 3 months after. To have coverage start in the birthday month, apply in the first 3 months.
• If the person has been receiving Social Security for at least 4 months before turning 65, Parts A and B start automatically (the card arrives by mail; Part B can be declined if there is qualifying coverage from current work).
• If Social Security has not started, the person must enroll: ssa.gov, 1-800-772-1213 or an SSA office.
• Missed every window: General Enrollment Period, January 1 – March 31, coverage starts the month after signing up.

5.3. Still working after 65

• With coverage from current employment (own or spouse's) at an employer with 20+ employees, the group plan stays primary and Part B can be delayed without penalty. After the job or the coverage ends (whichever comes first) there is an 8-month Special Enrollment Period. The employer completes Form CMS-L564 as proof.
• With fewer than 20 employees, Medicare becomes primary and Part B must be taken on time, or the employer plan may refuse to pay.

5.4. IRMAA — the high-income surcharge

Part B and Part D premiums go up when MAGI (AGI + tax-exempt interest) from two years earlier exceeds a threshold. 2026 premiums are based on the 2024 tax return.

• It is a cliff: $1 over a threshold triggers the whole tier. Selling a home or business, a large Roth conversion or a large IRA withdrawal today raises Medicare premiums two years later.
• Appeal with Form SSA-44 when income dropped because of a life-changing event: work stoppage or reduction, death of a spouse, divorce, loss of pension, etc. Retirement is the most common reason — the premium is then based on current, lower income.
• Married people filing separately who lived together face much harsher thresholds.

5.5. Paying premiums and taxes

• If the person receives Social Security, premiums are deducted from the benefit. If not, Medicare sends a bill (usually quarterly). Pay through Medicare Easy Pay (automatic deduction), online at Medicare.gov, through the bank or by check.
• Part B, Part D, Medigap and Medicare Advantage premiums are medical expenses on Schedule A (deductible above 7.5% of AGI, if itemizing).
• A self-employed person can deduct Medicare premiums as the self-employed health insurance deduction (Schedule 1) — no 7.5% floor, limited to business income.
• Medicare benefits themselves are not taxable.

Sources: CMS 2026 Medicare Parts A & B Premiums and Deductibles; Medicare.gov; SSA "Medicare Premiums: Rules for Higher-Income Beneficiaries".

6. Health coverage before 65

Someone who retires before 65 needs their own coverage until Medicare. It is often the largest expense in the first years of retirement.

• Retiree coverage from the employer — if offered (more common for government employees).
• COBRA — continuing the former employer's plan, usually for up to 18 months. The person pays the full cost plus up to 2%.
• ACA Marketplace (healthcare.gov) with the income-based (MAGI) Premium Tax Credit. The credit is paid in advance during the year (APTC) and reconciled on the return: Form 1095-A → Form 8962.

7. Employer pensions and FRS

7.1. How a pension works

A traditional (defined benefit) pension follows a formula, for example years of service × 1.6% × average pay of the best 5–8 years. The right to it starts after vesting (usually 5–8 years). The employer, not the worker, carries the investment risk.

7.2. Choosing the payment form — often irrevocable

Private pensions are insured by the federal PBGC (up to limits) if the employer goes bankrupt. Government pensions are not covered by the PBGC — they are backed by the state or local government.

7.3. How pensions are taxed

• A pension is taxed federally as ordinary income at 10–37%. It is reported on Form 1099-R and goes on Form 1040, lines 5a/5b.
• If the employee made after-tax contributions, part of each payment is a return of those contributions and is not taxed. The calculation uses the Simplified Method (worksheet in the 1040 instructions and Pub. 575) or the General Rule. The 1099-R then shows Box 2a smaller than Box 1, with after-tax contributions in Box 5 / 9b. If Box 2b "taxable amount not determined" is checked, the tax preparer figures the taxable part.
• Withholding is set with Form W-4P (periodic payments).

Special cases

• Military retirement pay is taxable; VA disability compensation is not.
• Federal employees: FERS = pension + Social Security + TSP; the older CSRS had no Social Security (which used to trigger WEP/GPO, now repealed).
• Retired public safety officers (police, firefighters, EMS): up to $3,000 a year of health or long-term care insurance premiums paid from that governmental plan's pension can be excluded from income. Since 2023 the premiums no longer have to be paid directly by the plan.
• An employer disability pension received before the plan's minimum retirement age is reported as wages (Form 1040, line 1h), not as a pension.

7.4. Florida Retirement System (FRS)

Many Floridians are former state and local government employees, teachers, county workers or police officers. They are members of the FRS.

• Since 2002, employees choose between the Pension Plan (defined benefit) and the Investment Plan (defined contribution, similar to a 401(k)).
• Pension Plan vesting: 8 years for members enrolled on or after July 1, 2011 (6 years for earlier members). Investment Plan: 1 year.
• Normal retirement (Regular Class): enrolled on or after July 1, 2011 — age 65 or 33 years of service; earlier members — age 62 or 30 years. Special Risk (police, firefighters) — earlier.
• COLA: 3% a year only for service before July 1, 2011, prorated; no COLA for service after that date.
• DROP (Deferred Retirement Option Program): the member "locks in" the pension and keeps working, while pension payments accumulate in a separate account with interest. Since July 1, 2023 — up to 96 months at 4% interest. At the end, the DROP balance can be rolled over to an IRA (tax-free) or paid out (taxable). This is a common mistake: the DROP balance is large, and taking it in cash sharply raises tax and IRMAA.
• HIS (Health Insurance Subsidy): a monthly addition to the pension for retirees with health coverage — $7.50 per year of service (minimum $45, maximum $225 a month, since 2023).
• Most FRS members paid Social Security tax and receive both benefits in full.

Sources: IRS Pub. 575, Pub. 721 (federal), Pub. 525; IRS Topic 410; Florida Division of Retirement / myfrs.com; Florida SB 7024 (2023).

8. Retirement accounts: 401(k), 403(b), 457(b), IRA, HSA

8.1. Account types and 2026 contribution limits

From 2026: if prior-year FICA wages from that employer exceeded $150,000, 401(k)/403(b)/457(b) catch-up contributions must be made as Roth.

8.2. Traditional vs. Roth — the key difference

• Roth IRA income limit: in 2026, direct contributions phase out at MAGI $153,000–$168,000 (single) and $242,000–$252,000 (MFJ). Above that, people use a "backdoor Roth" (nondeductible Traditional IRA contribution + conversion), subject to the pro-rata rule if other Traditional IRAs hold pre-tax money.
• Traditional IRA: anyone with earned income can contribute, but the deduction is limited by income if the person (or spouse) is covered by a workplace plan. Nondeductible contributions create basis, tracked on Form 8606. Keep that form for years: without it, the money gets taxed a second time when withdrawn.
• Roth IRA: the person's own contributions (not earnings) can be taken out at any time tax- and penalty-free. Ordering rules: contributions first, then conversions, then earnings.
• Spousal IRA: a non-working spouse can have their own IRA funded by the working spouse's income (filing MFJ).

8.3. Commercial annuities

• Qualified annuity — held inside an IRA or plan: taxed like the IRA.
• Non-qualified annuity — bought with after-tax money: only the earnings are taxed. With annuitized payments, part of each payment is a return of investment (exclusion ratio). With withdrawals before annuitization, earnings come out first (taxable). Earnings withdrawn before 59½ carry the 10% penalty. Reported on 1099-R (often code D or 7).

8.4. HSA — the "hidden" retirement account

Contributions reduce tax, growth is tax-free, and withdrawals for medical expenses are tax-free — a triple tax benefit. After 65, money can be withdrawn for anything without penalty (taxed like a Traditional IRA), and tax-free for medical costs and Medicare premiums (except Medigap). Many people deliberately build an HSA to cover medical costs in retirement.

9. Preparing for retirement: what to do in advance

The question we hear most: "What can I do now so my taxes are lower in retirement?"

10–20 years out

• Capture the full employer match — it is free money. Raise the contribution rate over time.
• Tax diversification — three buckets: (1) taxable accounts (brokerage, savings), (2) tax-deferred (Traditional 401(k)/IRA), (3) tax-free (Roth, HSA). If everything is Traditional, every dollar withdrawn in retirement is taxed and also raises the tax on Social Security and IRMAA. Money in three buckets lets the retiree choose each year where to withdraw from and manage the tax.
• Traditional or Roth — by tax rate: a high rate now (22–24%+) usually points to Traditional; a low rate (10–12%) usually to Roth. Many plans allow splitting contributions.
• Spousal IRA for a non-working spouse; backdoor Roth for high earners.
• HSA with an HDHP: contribute the maximum and, if possible, let it grow instead of spending it.
• Self-employed: a SEP-IRA or Solo 401(k) reduces tax now. And pay SE tax on real income — future Social Security depends on it.
• Saver's Credit (Form 8880) for lower incomes — a tax credit of up to 50% of contributions (up to $2,000 per person).
• Check the earnings history in my Social Security.

5 years out

• Catch-up contributions from 50; super catch-up at 60–63.
• Build the full picture: Social Security projection, pension (if any), all accounts; estimate future expenses.
• Decide how health insurance before 65 will be paid for (section 6).
• Review beneficiaries on all accounts (always after a marriage, divorce or a spouse's death).
• Think about paying off the mortgage or moving (home sale — section 15).

The year before and the year of retirement

• Retirement date: leaving in the year of turning 55 or later opens the Rule of 55 for that employer's 401(k); bonuses and accrued vacation payouts raise the final year's income.
• 401(k) decision: leave it in the plan or do a direct rollover to an IRA (see 10.4).
• Pension: choose the payment form (7.2) together with the spouse.
• Social Security and Medicare dates (sections 4, 5).
• Tax withholding: in retirement there is no W-2 with automatic withholding. Set up withholding from the pension, IRA and Social Security, or pay estimated tax (10.3) — otherwise there will be a balance due and a penalty in April.
• The first year of retirement is usually "mixed": wages for part of the year + pension/withdrawals. A tax projection is worth doing.

After retiring — the "low-tax window"

Between leaving work and the start of Social Security and RMDs, many people have several low-income years. That is the best time for Roth conversions, selling appreciated stock at the 0% rate, and qualifying for ACA subsidies (section 14).

10. Taking money out: tax, 10% penalty, withholding, rollovers

10.1. The 10% penalty before 59½ and its exceptions

Withdrawals from Traditional IRAs and plans before 59½ are subject to regular income tax plus a 10% additional tax (the "penalty") unless an exception applies. If an exception applies but the 1099-R shows code 1, claim the exception on Form 5329, Part I.

10.2. How withdrawals are taxed

• Traditional: the full amount is ordinary income (except basis from Form 8606). On the return: IRAs — lines 4a/4b; plans and pensions — lines 5a/5b.
• Qualified Roth (59½ + 5 years): tax-free. Non-qualified: contributions are tax-free, earnings are taxed (+10% before 59½).
• Retirement account withdrawals are not subject to FICA/SE tax.

10.3. Withholding and estimated tax

• If withholding is not enough — estimated tax (Form 1040-ES) four times a year: April 15, June 15, September 15, January 15.
• No underpayment penalty (Form 2210) if withholding + estimates ≥ 90% of this year's tax or ≥ 100% of last year's tax (110% if last year's AGI exceeded $150,000), or if the balance due is under $1,000.
• Useful technique: tax withheld from an IRA withdrawal (for example, from a December RMD) is treated as paid evenly throughout the year. One December withdrawal with large withholding can cover a whole year's underpayment without a penalty.

10.4. Rollovers

• Direct rollover (trustee-to-trustee): money moves from the plan straight to an IRA or new plan. No tax, no withholding. On the 1099-R — code G (code H for Roth 401(k) to Roth IRA). Box 2a is usually $0.
• Indirect (60-day) rollover: the money is paid to the person, who must deposit it in an IRA within 60 days. A plan withholds 20% — to roll over the full amount, the person must make up that 20% from other funds, or the withheld part becomes a taxable distribution (+10% before 59½). A missed 60-day deadline for a valid reason can sometimes be fixed by self-certification (Rev. Proc. 2020-46).
• Indirect IRA-to-IRA rollovers — no more than one per 12 months (across all the person's IRAs). Direct IRA-to-IRA transfers are unlimited.
• RMDs cannot be rolled over. In an RMD year, take the RMD first, then do the rollover or conversion.
• Highly appreciated employer stock in a 401(k) — before rolling over, check the NUA (net unrealized appreciation) option: if the shares go to a brokerage account, ordinary tax is paid only on their cost basis, and the appreciation is taxed later at capital-gains rates.

11. RMDs — Required Minimum Distributions

The government lets Traditional money go untaxed for years, but not forever. From a certain age, the owner must withdraw a minimum every year — and pay tax on it.

11.1. Which accounts

• Required: Traditional IRA, SEP-IRA, SIMPLE IRA; 401(k), 403(b), 457(b), TSP, profit-sharing; inherited IRAs and inherited Roth IRAs (under special rules).
• Not required: Roth IRA during the owner's life; Roth 401(k)/403(b) since 2024.

11.2. When

• Age 73 for people born 1951–1959; 75 for people born in 1960 or later.
• The first RMD can be delayed until April 1 of the following year (the required beginning date). Every later RMD is due by December 31. Delaying the first one means two RMDs in one year — double income, higher tax, more taxable Social Security and possibly IRMAA.
• Still-working exception: no RMD from the current employer's plan while the person is still working there (unless a 5%+ owner). It does not apply to IRAs.

11.3. How it is calculated

RMD = account balance on December 31 of the prior year ÷ the factor from the Uniform Lifetime Table (IRS Pub. 590-B, Appendix B) for the age reached this year.

• The RMD is flagged on Form 5498 (Box 11 checkbox, Boxes 12a/12b — date and amount); the custodian usually sends the calculation.
• Aggregation: the RMD is figured for each of the person's own Traditional/SEP/SIMPLE IRAs, but the total can be taken from any one or more of them. 403(b)s aggregate the same way among themselves. 401(k)s and 457(b)s — each separately. An IRA RMD cannot be satisfied from a 401(k) and vice versa. Inherited accounts are separate from the person's own. Spouses each handle their own.
• What counts toward the RMD: any withdrawals during the year (including tax withheld) and QCDs. Roth conversions and rollovers do not count.

11.4. A missed RMD: the penalty and how to avoid it

To figure your RMD or the tax on a missed one, use our free RMD & Missed RMD Penalty Calculator.

A full waiver is available if the shortfall was due to reasonable error and reasonable steps are being taken to fix it. In practice, the IRS usually grants it if the shortfall has already been withdrawn and the explanation is reasonable. Steps:

1. Withdraw the full shortfall as soon as possible (this is the key condition).
2. Complete Form 5329, Part IX for each year with a shortfall (and for each person separately). If the 1040 for that year has already been filed, file Form 5329 on its own, signed, to the address where a 1040 would be filed (see the 5329 instructions). For prior years, use that year's version of the form.
3. Line 52 — the RMD; line 53 — the amount actually distributed; line 54 — the shortfall (the 2025 form has a/b columns for different account types).
4. On the dotted line next to line 54, enter "RC" and, in parentheses, the amount you are asking to have waived. Line 55 — the tax on whatever remains (usually $0).
5. Attach a letter of explanation: why the shortfall happened (illness, custodian or advisor error, death of a spouse, a move, confusion over accounts) and what has been done to fix it (date and amount of the corrective withdrawal).
6. Do not pay tax on the amount requested for waiver. If the IRS denies the request, it will send a notice.

Statute of limitations: under SECURE 2.0, the 3-year limitations period for this tax starts when the Form 1040 for that year is filed, even if no Form 5329 was filed. For older years the IRS may no longer be able to assess the penalty.

11.5. Inherited retirement accounts — briefly

• A spouse can treat the account as their own or roll it into their own IRA — the most flexible option.
• Most other beneficiaries (adult children, etc.) — the 10-year rule: the account must be emptied by the end of the 10th year after death. If the owner had already started RMDs, the beneficiary must also take annual RMDs in years 1–9 (enforced from 2025).
• Eligible designated beneficiaries (spouse, the owner's minor child until 21, a disabled or chronically ill person, someone not more than 10 years younger than the owner) can stretch withdrawals over their life expectancy.
• An inherited Roth IRA — also 10 years, but tax-free.
• If no beneficiary is named and the account passes to the estate, worse rules apply. That is why checking beneficiaries is a must.

Sources: IRS Pub. 590-B; Instructions for Form 5329 (2025); IRS "RMD FAQs"; Treas. Reg. § 1.401(a)(9) (2024 final regulations); SECURE 2.0 Act §§ 107, 302, 313, 325.

12. How Social Security is taxed

Up to 85% of Social Security benefits can be included in taxable income. The 50% and 85% figures are the maximum share of the benefit that is taxable, not a tax rate. The first step is provisional income (combined income):

• These thresholds have not been indexed since 1984/1993, so more and more people pay tax on Social Security.
• If Social Security is the only income, it is usually not taxable at all and a return is often not required.
• Pensions, Traditional IRA/401(k) withdrawals, interest, dividends and capital gains raise provisional income and make more Social Security taxable. Roth withdrawals do not.
• Exact calculation: the Social Security Benefits Worksheet in the 1040 instructions or Pub. 915 — or try our free Social Security Benefits Tax Calculator.

The "tax torpedo"

In the range where the taxable share of Social Security is growing, each extra dollar from an IRA also adds $0.50–$0.85 of Social Security to taxable income. The real marginal rate ends up well above the bracket rate — see the example in section 13.

Other points

• Back benefits paid in one lump sum (for example, after a long SSDI approval) — tax can be refigured as if received in the earlier years (lump-sum election, Pub. 915; checkbox on Form 1040, line 6c).
• Repayments (SSA-1099 Box 4) reduce the year's benefits. If repayments exceed the year's benefits and are over $3,000 — an itemized deduction or a claim-of-right credit (§ 1341).
• Withholding from Social Security — Form W-4V.
• Railroad Retirement Tier 1 is taxed like Social Security; Tier 2 like a pension.

13. A retiree's 2026 federal tax, all together

13.1. Deductions

13.2. 2026 tax brackets

• Long-term capital gains and qualified dividends: 0% on taxable income up to $49,450 (single) / $98,900 (MFJ); then 15%; 20% above $545,500 / $613,700.
• NIIT 3.8% on investment income when MAGI exceeds $200,000 / $250,000. Pensions, IRA withdrawals and Social Security are not subject to NIIT themselves, but they raise MAGI.
• Filing requirement: generally required if gross income (excluding nontaxable Social Security) exceeds the standard deduction including the age add-on — for example, $18,150 for a single person 65+ or $35,500 for a married couple both 65+. File anyway if tax was withheld and can be refunded. Form 1040-SR is available for 65+ (large print, same content).
• Charitable giving: from 2026, non-itemizers can deduct cash gifts up to $1,000 (single) / $2,000 (MFJ). For people 70½+ with an IRA, a QCD is usually better (section 14).
• Medical expenses (including Medicare premiums and, within age-based limits, long-term care insurance) — Schedule A, above 7.5% of AGI.
• The Credit for the Elderly or Disabled (Schedule R) exists but rarely applies because of its low income limits and the way it counts Social Security.

14. Tax strategies in retirement

1. Partial Roth conversions in the "window" years. Convert part of a Traditional IRA to a Roth IRA and pay the tax now at a low rate — typically "filling up" the 12% or 22% bracket. Benefits: smaller future RMDs, less future tax on Social Security, lower IRMAA, and heirs inherit Roth money tax-free. What to watch:
   • IRMAA two years later; ACA subsidies (if on the Marketplace before 65); the senior-deduction phase-out ($75,000 / $150,000); Social Security taxation (the torpedo); the 0% capital-gains rate (a conversion can push gains into 15%).
   • A conversion cannot be undone (recharacterization ended in 2018).
   • Pay the conversion tax from other money, not from the IRA itself.
   • Under 59½, each conversion has its own 5-year clock for penalty-free withdrawal.
   • In an RMD year, take the RMD first, then convert.
   • Plan for the conversion tax in estimated payments or withholding.
2. QCDs (from 70½): up to $111,000 per person in 2026, sent directly from the IRA to a qualifying charity (not a donor-advised fund or private foundation). The amount is excluded from AGI, counts toward the RMD, and does not raise Social Security taxation or IRMAA. Almost always better than withdrawing and then donating. IRAs only (not 401(k)s).
3. Delay Social Security and live on the IRA. IRA withdrawals at 62–70 shrink future RMDs, and a larger Social Security benefit from 70 is taxed more lightly than the same amount from an IRA. The survivor benefit grows too.
4. Harvesting gains at 0%. In low-income years, sell appreciated stock in a taxable account and buy it right back (the wash-sale rule does not apply to gains) — resetting the basis tax-free.
5. Managing MAGI for IRMAA: stay under the threshold; spread large income over several years; file SSA-44 after retiring.
6. The widow's penalty: after a spouse dies, the survivor files as single from the following year — with brackets and IRMAA thresholds about half as large, while income drops much less. Conversions while both spouses are alive soften this.
7. Heirs: children who inherit a Traditional IRA must withdraw it within 10 years — often in their own peak-earning, high-tax years. Roth accounts and taxable accounts (which get a step-up in basis to the value at death) are better for heirs.
8. Bunching: grouping itemized deductions (charity, medical) into one year to beat the standard deduction, and taking the standard deduction in other years.
9. Withdrawal order is not a rigid "taxable first, then Traditional, then Roth" rule but a yearly decision: fill the low brackets from Traditional money, take the rest from taxable or Roth accounts.

15. Other common questions

• Working in retirement: wages and self-employment income are taxed as usual (including FICA/SE tax); the earnings test applies before FRA; with earned income a person can keep contributing to an IRA and a Roth IRA at any age.
• Selling a home: up to $250,000 (single) / $500,000 (MFJ) of gain is excluded if the home was the main residence for 2 of the last 5 years. A surviving spouse keeps the $500,000 exclusion if the sale occurs within 2 years of the spouse's death.
• Reverse mortgage: the money is a loan, not income; it is not taxable.
• Long-term care: Medicare does not cover it. Options: own funds, long-term care insurance, Medicaid (very low income and assets, complex rules).
• Moving to Florida from another state: federal law (4 U.S.C. § 114) bars states from taxing pension and IRA/401(k) income of former residents. But the change of domicile has to be documented: a Declaration of Domicile, homestead, a Florida driver's license and voter registration. Otherwise the former state may keep treating the person as a resident.
• Florida property tax: homestead exemption, the Save Our Homes assessment cap, additional local exemptions for 65+ (with income limits). Details are in state law and with the county property appraiser.

16. Forms: SSA-1099, 1099-R and others

16.1. SSA-1099 (Social Security Benefit Statement) — arrives in January

Medicare premiums are already included in Box 3 and do not reduce Box 5: for tax purposes the person received the full benefit.

16.2. Form 1099-R — pensions, IRAs, 401(k)s, annuities

Issued for any distribution of $10 or more, as well as for rollovers and conversions — by January 31.

Box 7 distribution codes (1, 2, 4, 7, B, G, H, Q, T, Y and others) tell the IRS what kind of withdrawal it was. Tax preparers can find a full code-by-code guide in our article Retirement Income on Form 1040: A Tax Preparer's Guide.

16.3. Form 1040 lines and other forms

17. Checklists

17.1. If you are retiring this year or next

1. List every account you have: 401(k), 403(b), 457(b), TSP, IRAs (Traditional/Roth), pension, HSA, brokerage, annuities, old plans from former employers.
2. Social Security projection (my Social Security) for you and your spouse; check the earnings history.
3. Decide when to start Social Security — considering the spouse, health, work and taxes.
4. Medicare: enrollment date, Special Enrollment Period, stop HSA contributions 6 months ahead.
5. Health coverage before 65 (if retiring early).
6. Pension: payment form (single / joint & survivor / lump sum) — decided together with the spouse.
7. For each plan: leave it or direct rollover; employer stock — check NUA; leave the 401(k) alone before 59½ if Rule of 55 access is needed.
8. Tax withholding: W-4P, W-4R, W-4V or estimated tax.
9. Tax projection for the first full year of retirement.
10. Evaluate Roth conversions for the "window" years.
11. Beneficiaries on every account.
12. If your income dropped — file SSA-44 to reduce IRMAA.

17.2. Every year in retirement

1. RMD taken from every account by December 31 (the first one by April 1)?
2. QCDs instead of cash donations (70½+)?
3. Enough withholding and estimated tax? (A December withdrawal with withholding fixes underpayment.)
4. Room left in a low bracket for a conversion?
5. Is MAGI approaching an IRMAA or senior-deduction threshold?
6. Family changes → beneficiaries, filing status.

17.3. What to bring to your tax appointment

• SSA-1099 (for each spouse); RRB-1099 if any.
• All 1099-Rs (for every account and pension); Form 5498 (for RMDs and conversions).
• Prior Forms 8606 (if there were nondeductible contributions).
• QCD acknowledgments from the charities.
• 1095-A (if they had ACA coverage); Medicare premium details if self-employed or itemizing.
• Estimated payments for the year; 1099-INT/DIV/B; home sale documents.

18. Official Sources

• Social Security Administration, Retirement benefits
• SSA, 2026 Social Security Changes (COLA Fact Sheet)
• SSA, Benefit reduction for early retirement
• SSA, Receiving benefits while working
• SSA, International (totalization) agreements
• SSA, Summary of the Trustees Reports
• Medicare.gov, Get started with Medicare
• Medicare.gov, Medicare costs
• Medicare.gov, Avoid late enrollment penalties
• IRS Publication 575, Pension and Annuity Income
• IRS Publication 590-B, Distributions from IRAs
• IRS Publication 915, Social Security and Equivalent Railroad Retirement Benefits
• IRS Publication 554, Tax Guide for Seniors
• IRS, Required minimum distributions FAQs
• IRS, Exceptions to tax on early distributions
• IRS, Rollovers of retirement plan and IRA distributions
• IRS, 2026 401(k) and IRA limits
• IRS Rev. Proc. 2025-32, 2026 inflation adjustments
• IRS, One Big Beautiful Bill Act: deductions for seniors
• Florida Retirement System (MyFRS)
• Florida SHINE, free Medicare counseling

This article is general information, not tax, legal or investment advice for your specific situation. Figures are for 2026 and change every year.